wfb-link, a userspace WiFiBroadcast radio stack for macOS

v0.1.0 Feature

This release adds 3 notable features for engineering teams evaluating rollout.

Published 13d Infrastructure

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ReleasePort's take

Light signal

editorial:auto 13d

v0.1.0 adds structured metadata for radio-link signal monitoring, including RSSI/SNR/noise metrics and RF debug context for aggregate and per-stream receive forwards.

Why it matters: WiFiBroadcast operators gain signal quality visibility through RSSI, SNR, and noise metrics. Available in v0.1.0; evaluate for your monitoring and debugging workflows.

Summary

AI summary

Updates Highlights, Validation, and Known Limitations across a mixed release.

Changes in this release

Type	Severity	Summary	CVE
Feature
Feature	Medium	Adds structured radio-link signal metadata for aggregate RX and per-stream RX forwards, including RSSI/SNR/noise metrics, freshness state, normalized quality, source coverage, and RF debug context. Adds structured radio-link signal metadata for aggregate RX and per-stream RX forwards, including RSSI/SNR/noise metrics, freshness state, normalized quality, source coverage, and RF debug context. Source: llm_adapter@2026-05-22 Confidence: low	—
Feature	Medium	Promotes the managed raw application stream backend for telemetry, video, and control streams. Promotes the managed raw application stream backend for telemetry, video, and control streams. Source: granite4.1:30b@2026-05-22-audit Confidence: low	—
Feature	Medium	Adds Android USBHost runtime path using app-owned `UsbDeviceConnection`/JNI handoff. Adds Android USBHost runtime path using app-owned `UsbDeviceConnection`/JNI handoff. Source: granite4.1:30b@2026-05-22-audit Confidence: low	—
Feature	Low	Keeps optional managed tunnel backend with health/report metadata and degradation via `__tunnel` sentinel. Keeps optional managed tunnel backend with health/report metadata and degradation via `__tunnel` sentinel. Source: granite4.1:30b@2026-05-22-audit Confidence: low	—
Feature	Low	Adds Android SDK surface, AAR packaging script, and consumer smoke tests (both direct and Gradle). Adds Android SDK surface, AAR packaging script, and consumer smoke tests (both direct and Gradle). Source: granite4.1:30b@2026-05-22-audit Confidence: low	—
Feature	Low	Provides Android foreground-service sample and USB smoke harness for product mode validation. Provides Android foreground-service sample and USB smoke harness for product mode validation. Source: granite4.1:30b@2026-05-22-audit Confidence: low	—
Feature	Low	Documents downstream consumption via runtime JSON, `LinkHealth`, `LinkStreamRxHealth`, and Android `rxSignal`. Documents downstream consumption via runtime JSON, `LinkHealth`, `LinkStreamRxHealth`, and Android `rxSignal`. Source: granite4.1:30b@2026-05-22-audit Confidence: low	—
Feature	Low	Adds long-range tailnet field profile config and preparation runbook for receiver-backed validation. Adds long-range tailnet field profile config and preparation runbook for receiver-backed validation. Source: granite4.1:30b@2026-05-22-audit Confidence: low	—
Performance	Low	Includes GitHub Actions coverage for Rust workspace, Android SDK packaging, and consumer compile checks. Includes GitHub Actions coverage for Rust workspace, Android SDK packaging, and consumer compile checks. Source: granite4.1:30b@2026-05-22-audit Confidence: low	—

Full changelog

wfb-link v0.1.0

This is the first baseline release after the alpha series. It keeps the crate
versions at 0.1.0 and promotes the current macOS userspace-radio, managed
stream/tunnel, Android USBHost, and radio-link metadata work behind a stable Git
tag for product integration.

Highlights

Promotes the managed raw application stream backend for named telemetry,
video, and control streams.
Keeps the optional managed tunnel backend path from v0.1.0-alpha.4,
including tunnel health/report metadata and best-effort tunnel degradation via
the __tunnel sentinel.
Adds the Android USBHost runtime path using app-owned
UsbDeviceConnection/JNI handoff rather than the libusb fd-wrap approach.
Adds the Android SDK surface, AAR packaging script, direct consumer smoke, and
Gradle-style consumer smoke.
Adds an Android foreground-service sample and USB smoke harness for product
mode validation.
Adds structured radio-link signal metadata for aggregate RX and per-stream RX
forwards: RSSI/SNR/noise metrics, freshness state, normalized quality, source
coverage, and RF debug context.
Documents downstream consumption through runtime JSON, wfb-link
LinkHealth/LinkStreamRxHealth, and Android rxSignal.
Adds long-range tailnet field profile config and preparation runbook for
receiver-backed validation.
Adds GitHub Actions coverage for the Rust workspace and Android SDK packaging
plus consumer compile checks.

Validation

cargo test
cargo fmt --check
openspec validate expose-radio-link-metadata --strict
git diff --check
scripts/build-android-sdk-consumer-smoke.sh
scripts/build-android-sdk-gradle-consumer-smoke.sh
GitHub Actions for PR #5:
- Android SDK
- Rust workspace

Known Limitations

Hardware scope remains RTL8812AU/AWUS036ACH class adapters.
The Linux backend remains a contract/design stub; Linux products should use
native WFB-NG over monitor mode for now.
RF calibration is not full Linux parity across all conditions. Runtime IQK,
LCK, and EFUSE TX-power work remains receiver-gated.
The accepted tunnel profile is short-range validation, not long-distance RF
acceptance.
Radio-link RSSI/SNR/noise are local receiver-side measurements. Remote/uplink
signal requires future peer-reported metadata.
Helper binaries, firmware, service TOML, and key material remain product
release artifacts.
Android product apps still own permission UX, foreground-service policy,
helper/key packaging, and release artifact promotion.

Assets

wfb-link-v0.1.0-macos-arm64.tar.gz: macOS arm64 command-line binaries for wfb-radio-service, wfb-radio-diag, and wfb-tun-macos, plus README, license, release notes, and manifest.
wfb-link-android-sdk-v0.1.0.aar: Android SDK AAR with Java API classes and arm64-v8a/libwfb_android.so.
*.sha256: SHA-256 checksums for the downloadable artifacts.

The Android AAR does not bundle WFB helper executables; product apps still own helper/key packaging for release builds.

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